Oil Circulation Pump Inquiry

n Oil Circulation Pump is a specialized pump used in Thermic Fluid Heaters, Oil-Fired Heaters, and Heat Exchanger Systems to ensure continuous circulation of thermal oil, fuel oil, or heat transfer fluid within the closed-loop heating system. Its primary function is to transfer heated oil from the heater to different process equipment and maintain uniform heat distribution, thereby improving thermal efficiency and preventing localized overheating.

The pump is designed to withstand high operating temperatures, varying viscosities, and continuous duty cycles without performance deterioration. Built with robust cast steel, stainless steel, or alloy materials, these pumps are engineered for long service life under severe operating conditions. They are widely used in chemical plants, refineries, textile units, food industries, pharmaceuticals, and boiler systems where indirect heating is required.

Technical Highlights

  • Type & Construction:
    • Available in centrifugal, positive displacement, or gear pump designs depending on application.
    • Horizontal or vertical mounting options.
    • End-suction and back-pull-out designs for ease of maintenance.
  • Fluid Handling Capability:
    • Designed for high-temperature oils such as thermic fluid, LDO (Light Diesel Oil), HFO (Heavy Furnace Oil), or synthetic heat transfer fluids.
    • Handles wide range of viscosities.
  • Operating Temperature:
    • Suitable for continuous operation at up to 350–400°C (depending on pump material & sealing arrangement).
  • Flow Rate & Pressure:
    • Typical flow range: 2 m³/hr to 500 m³/hr.
    • Discharge head: 10 to 90 meters (varies with model).
  • Sealing & Bearing Arrangement:
    • Fitted with mechanical seals or gland packing to prevent leakage of hot oil.
    • Bearings designed for oil or grease lubrication, resistant to high temperatures.
  • Materials of Construction (MOC):
    • Pump Casing: Cast Steel / Cast Iron / Stainless Steel / Alloy Steel.
    • Impeller / Rotor: SS 304 / SS 316 / Alloy Steel.
    • Shaft: Hardened Steel / SS with Sleeve Protection.
  • Drive & Motor Compatibility:
    • Directly coupled with flange-mounted electric motors.
    • Options for V-belt drive or gear drive available.
    • Explosion-proof or flameproof motors available for hazardous zones.
  • Safety & Reliability:
    • Equipped with thermal expansion joints and cooling jackets in high-temperature designs.
    • Built-in safeguards against dry running, overheating, and cavitation.
    • Conforms to API / DIN / ISO standards for critical applications.
  • Applications:
    • Thermic Fluid Circulation in Heaters.
    • Fuel Oil Transfer & Circulation in Boilers & Burners.
    • Heat Exchanger & Jacket Heating Systems.
    • Industrial Furnaces, Textile & Food Processing Industries.

✅ In summary, an Oil Circulation Pump is a reliable, high-temperature, and continuous-duty pump that ensures safe and efficient circulation of heat transfer oils in heater systems, maintaining system stability, process efficiency, and equipment longevity.